<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
       <div v-text="content">原本的数据</div>
       <div>原本的数据 -- {{ content }}</div>
       <div v-html="content">原本的数据</div>
    </div>
    <script src="./vue.js"></script>
    <script>
        // 实例化一个vue对象
        new Vue ({
            el: '#app',
            data: {
              content: '<h3>你好</h3>'
            }
        })
    </script>
</body>
</html>